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Thermostat location?

Tiny
2CP-ARCHIVES
  • MEMBER
  • 2003 CADILLAC CTS
  • V8
  • 2WD
  • AUTOMATIC
  • 159,608 MILES
Can having your thermostat replaced cause the engine to over heat? I think I need to change it can you help me please?
Wednesday, October 20th, 2010 AT 7:13 PM

10 Replies

Tiny
2CP-ARCHIVES
  • MEMBER
  • 4,542 POSTS
Here is a guide to help you step by step with instructions in the diagrams below to show you how on your car.

https://www.2carpros.com/articles/replace-thermostat

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Wednesday, October 20th, 2010 AT 8:03 PM
Tiny
JESSERAMIREZ
  • MEMBER
  • 1 POST
  • 2003 CADILLAC CTS
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 95,000 MILES
How long should it take to replace the thermostat, I was quoted 4 hours of labor, should it take this long?
Thank u
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Friday, January 8th, 2021 AT 6:43 PM (Merged)
Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
That is correct, it is situated under the upper and lower intake. Here is the labor information from ALLDATA.

Parts Information

Part OEM Part Price
Thermostat
Thermostat
4 - CTS 24420653 $22.60
Contact dealer for most current part and price information.

Thermostat
Replace
CTS 3.8
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Friday, January 8th, 2021 AT 6:43 PM (Merged)
Tiny
ZEALLY
  • MEMBER
  • 1 POST
  • 2003 CADILLAC CTS
Engine Cooling problem
2003 Cadillac CTS 69000 miles

I have a check engine light which came back saying my thermostat needs to be replaced. Ive been told it is a labor intensive job and may take anywhere from 1.5 to 5 hours to complete. The part itself is maybe $20 but the labor to replace the part is astounding. What has to happen in order to replace the thermostat? Is this something I could do at home or am I better off having it done in a shop?
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Friday, January 8th, 2021 AT 6:44 PM (Merged)
Tiny
BUZZSAW
  • MECHANIC
  • 1,198 POSTS
You have to access the timming belt. And remove it, and you need special tools to set it back up, at 69k you should do a belt if you havent done one
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Friday, January 8th, 2021 AT 6:44 PM (Merged)
Tiny
HANDS
  • MEMBER
  • 1 POST
  • 2003 CADILLAC CTS
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 110,000 MILES
My thermostat is out and like most people money is tight right now, But I know a guy that knows a guy that knows a guy that said he can do it. I totally trust my friend, But how hard is it to put these things on. Are should I wait and go to dearler.
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Friday, January 8th, 2021 AT 6:44 PM (Merged)
Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
The upper and lower intake need to be off, and the transfer pipe from the upper hose to the t-stat housing needs to come out. It uses external torx(e-torx) type fasteners. The bolt that holds the pipe, also holds the oil dipstick tube, and an engine lift strap.
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Friday, January 8th, 2021 AT 6:44 PM (Merged)
Tiny
BORY BLUE
  • MEMBER
  • 2 POSTS
  • 2003 CADILLAC CTS
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 680,000 MILES
I went to the dealer to see why the check engine light came on in my car. I was told I have a faulty thermostat. How serious is this? Can I still drive the car?
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Friday, January 8th, 2021 AT 6:44 PM (Merged)
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
A faulty thermostat can cause engine overheating so I would not recommend driving it until it is fixed.
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Friday, January 8th, 2021 AT 6:44 PM (Merged)
Tiny
BORY BLUE
  • MEMBER
  • 2 POSTS
Thanks man
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Friday, January 8th, 2021 AT 6:44 PM (Merged)

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